Air Brakes #1
Air Brakes Endorsement Test | Oklahoma 2025 #1
Train for FREE online with our Oklahoma CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a OK Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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1 . During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
2 . During an inspection, slack adjusters on S-cam brakes should not move more than:
Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
3 . You should test the low pressure warning signal by:
It is essential that your low pressure warning light functions properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.
4 . If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
If the low air pressure warning signal comes on while you are operating a vehicle with air brakes, you should stop and safely park the vehicle as soon as possible. It is essential that you are able to stop safely while you still have some braking power remaining.
5 . When you are about to start down a hill, you should switch into a ____ gear.
Before starting down a hill, be sure to switch into a low gear. Gravity will increase your vehicle's speed as you travel downhill.
6 . Air tank drains:
Compressed air in an air brake system usually has a certain amount of water and oil in it. This can harm the system if allowed to accumulate. Air tanks have drain valves to aid in removing water and oil from the compressed air.
See the exact questions that will be on the 2025 Oklahoma DMV exam.
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2025 Oklahoma | Frequently Asked Questions
In Oklahoma, to acquire a CDL Passenger endorsement, you must first possess a Commercial Driver’s License (CDL). Next, study the Oklahoma CDL manual's passenger transport section. After studying, schedule and pass the written knowledge test at a Department of Public Safety testing facility. Some may also need to pass a skills and driving test in the type of vehicle you plan to operate.
To obtain a CDL Passenger license in Oklahoma, you must be at least 21 years old, possess a valid Commercial Driver's License (CDL), and pass the passenger transport written knowledge test. In some cases, you may also need to pass a skills and driving test in the type of vehicle you plan to operate. A clean driving record is also crucial.
While Oklahoma doesn't require specific training to secure a CDL Passenger endorsement, it's recommended to have training for the best chance of passing the written and skills tests. Experience driving commercial vehicles can also be beneficial. Studying the passenger transport section of the Oklahoma CDL manual is crucial to understand regulations and safety procedures.
Yes, to obtain a CDL Passenger endorsement in Oklahoma, you must pass the Passenger endorsement written test. This test covers topics such as vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks. No additional road skills test is required for this endorsement.
During the CDL Passenger endorsement assessment, you'll need to demonstrate skills such as proper pre-trip inspection, safe loading and unloading of passengers, use of emergency exits, responding to emergency situations, and safely navigating the vehicle on the road. You'll also need to show proficiency in driving in various conditions and handling different passenger scenarios.
No, you cannot legally transport passengers in Oklahoma without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to operate a vehicle that can carry 16 or more passengers, including the driver. Driving such a vehicle without the appropriate endorsement can result in penalties, including fines and suspension of driving privileges.
Yes, you can add a CDL Passenger endorsement to your existing commercial driver's license in Oklahoma. You don't need a new application. You'll need to pass the Passenger endorsement written test and pay the required fees. Once you've passed, the endorsement will be added to your current CDL.
Yes, there are certain restrictions for drivers with a CDL Passenger endorsement in Oklahoma. Drivers must not have any serious traffic violations within the past two years. They are also required to pass a background check and must not have any prior disqualifying criminal offenses. Additionally, drivers are expected to maintain a high level of safety and compliance with all transportation regulations.
Yes, in Oklahoma, to obtain a CDL Passenger endorsement, you must be at least 21 years old. This is because interstate driving is often involved when transporting passengers, and federal regulations mandate a minimum age of 21 for interstate commercial driving. So, you must meet this age requirement before you can apply for the endorsement.
With a CDL Passenger endorsement in Oklahoma, you will be eligible to operate vehicles designed to transport 16 or more passengers, including the driver. This includes buses, vans, and other vehicles used for public transportation or for-hire transportation services. The endorsement is required if you plan to operate a commercial vehicle that falls into this category.
